package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.LoginUserConstant;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.feign.ThirdPartFeignService;
import com.atguigu.gulimall.auth.vo.UserLoginVo;
import com.atguigu.gulimall.auth.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.*;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {
    @Autowired
    private StringRedisTemplate redisTemplate;
    @Autowired
    private ThirdPartFeignService thirdPartFeignService;
    @Autowired
    private MemberFeignService memberFeignService;

     @GetMapping( "/login.html")
     public String loginPage(HttpSession session){
         Object attribute = session.getAttribute(LoginUserConstant.USER_LOGIN);
         if(attribute == null){
             return "login1";
         }else {
             return "redirect:http://daogumall.com";
         }

     }

     /*@GetMapping( "/reg.html")
     public String regPage(){
         return "reg1";
     }*/
    // 生成四位随机数字的方法
    public String generateFourDigitCode() {
        Random random = new Random();
        int code = 1000 + random.nextInt(9000); // 生成1000到9999之间的随机数
        return String.valueOf(code);
    }

    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R senCode(@RequestParam("phone") String phone) {
        //TODO 1接口防刷
        String redisCode = redisTemplate.opsForValue().get("sms:code:" + phone);
        if (!StringUtils.isEmpty(redisCode)) {
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - l < 60 * 1000) {
                return R.error(1, "验证码已经发送，请稍后再试");
            }
        }
        //2验证码的再次效验 redis 存key-phone value-code
        //String code = UUID.randomUUID().toString().substring(0, 4);
        String code = generateFourDigitCode();
        String copyCode = code + "_" + System.currentTimeMillis();
        System.out.println(code);
        redisTemplate.opsForValue().set("sms:code:" + phone, copyCode, 3, TimeUnit.MINUTES);
        //redis缓存验证码防止同一个phone在60s内多次发送验证码
        thirdPartFeignService.sendCode(phone, code);
        return R.ok();
    }

    /**
     * //TODO 重定向携带数据，利用session原理。将数据放在session中。只要跳到下一个页面取出这个数据以后，session里面的数据就会删掉,会出现分布式session问题
     * RedirectAttributes redirectAttributes:模拟重定向携带数据
     *
     * @param vo
     * @param result
     * @param model
     * @return
     */
    @PostMapping("/regist1")
    // @Valid 开启数据校验
    public String regist1(@Valid UserRegistVo vo, BindingResult result, Model model, RedirectAttributes redirectAttributes) {

        if (result.hasErrors()) {
            //校验出错
            Map<String, String> errors = result.getFieldErrors()
                    .stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));

            //model.addAttribute("errors",errors);
            redirectAttributes.addFlashAttribute("errors", errors);
            //校验出错，重定向到注册页
            return "redirect:http://auth.daogumall.com/reg.html";
        }

        String code = vo.getCode();
        String s = redisTemplate.opsForValue().get("sms:code:" + vo.getPhone());
        if (!StringUtils.isEmpty(s)) {
            if (code.equals(s.split("_")[0])) {
                //删除验证码;令牌机制
                redisTemplate.delete("sms:code:" + vo.getPhone());
                //验证码通过         //真正注册,调用远程服务进行注册
                R r = memberFeignService.regist(vo);
                if (r.getCode() == 0) {
                    //成功
                    return "redirect:http://auth.daogumall.com/login.html";
                } else {
                    Map<String, String> errors = new HashMap<>();
                    errors.put("msg", r.getData("msg", new TypeReference<String>() {
                    }));
                    redirectAttributes.addFlashAttribute("errors", errors);
                    return "redirect:http://auth.daogumall.com/reg.html";
                }
            } else {
                Map<String, String> errors = new HashMap<>();
                errors.put("code", "验证码错误");
                redirectAttributes.addFlashAttribute("errors", errors);
                return "redirect:http://auth.daogumall.com/reg.html";
            }
        } else {
            Map<String, String> errors = new HashMap<>();
            errors.put("code", "验证码错误");
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.daogumall.com/reg.html";
        }
    }



    public void allDel(String key) {
        if (!StringUtils.isEmpty(key)){
            Set<String> keys = redisTemplate.keys(key + "*");
            if (keys != null) {
                redisTemplate.delete(keys);
            }
        }
    }
    @ResponseBody
    @GetMapping("/sms/sendCodeGraphic")
    public R sendCodeByGraphic(@RequestParam("code") String code,@RequestParam("phone") String phone) {
        allDel("sms-code:"+ phone+"_");
        //2验证码的再次效验 redis
        redisTemplate.opsForValue().set("sms-code:" + phone+"_"+code, code, 5, TimeUnit.MINUTES);
        return R.ok();
    }


    /**
     * //TODO 重定向携带数据，利用session原理。将数据放在session中。只要跳到下一个页面取出这个数据以后，session里面的数据就会删掉,会出现分布式session问题
     * RedirectAttributes redirectAttributes:模拟重定向携带数据
     *
     * @param vo
     * @param result
     * @param model
     * @return
     */
    @PostMapping("/regist")
    // @Valid 开启数据校验
    public String regist(@Valid UserRegistVo vo, BindingResult result, Model model, RedirectAttributes redirectAttributes) {

        if (result.hasErrors()) {
            //校验出错
            Map<String, String> errors = result.getFieldErrors()
                    .stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));

            //model.addAttribute("errors",errors);
            redirectAttributes.addFlashAttribute("errors", errors);
            //校验出错，重定向到注册页
            return "redirect:http://auth.daogumall.com/reg.html";
        }

        String code = vo.getCode();
        String phone=   vo.getPhone();
        String s = redisTemplate.opsForValue().get("sms-code:" + phone+"_"+code);
        if (!StringUtils.isEmpty(s)) {

            //删除验证码;令牌机制
            //redisTemplate.delete("sms-code:"+ phone+"_");
            redisTemplate.delete("sms-code:"+ phone+"_"+code);
           // allDel("sms-code:"+ phone+"_");
            //验证码通过         //真正注册,调用远程服务进行注册
            R r = memberFeignService.regist(vo);
            if (r.getCode() == 0) {
                //成功
                return "redirect:http://auth.daogumall.com/login.html";
            } else {
                Map<String, String> errors = new HashMap<>();
                errors.put("msg", r.getData("msg", new TypeReference<String>() {
                }));
                redirectAttributes.addFlashAttribute("errors", errors);
                return "redirect:http://auth.daogumall.com/reg.html";
            }
        } else {
            Map<String, String> errors = new HashMap<>();
            errors.put("code", "验证码错误");
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.daogumall.com/reg.html";
        }
    }


    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes, HttpSession session){

        R login = memberFeignService.login(vo);
        if(login.getCode()==0){
            MemberRespVo data = login.getData("MemberEntity", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(LoginUserConstant.USER_LOGIN, data);
            return "redirect:http://daogumall.com";
        }else {
            Map<String,String> errors=new HashMap<>();
            errors.put("msg",login.getData("msg",new TypeReference<String>(){}));
            System.out.println("errors:"+errors);
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.daogumall.com/login.html";
        }

    }

}
